Tuesday, February 25, 2020

Cisco 3850 running Fuji w/ excessive output drops

recently this issue made a comeback for me and i'm wondering what to do about it. Cisco TAC helped me the first time with setting up the queues and buffers using a service policy (i'm not a Packet shaping pro). Anyway, my understanding is that these output drops are coming from over subscription on the Gig ethernet port. how can this be when it's a gig to gig connection and it's never topped 60Mbps? Further how does one troubleshoot or monitor for this instance? the dropped packets appear to be causing disconnect issues with the ESX host NIC connected to this port, but the port state on the switch never changes.



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